Ajan pyörä is a 11-book series first released in 1990 with contributions by Robert Jordan, Marja Sinkkonen, and 3 others.
1991 • 1 Reader • 428 pages
1991 • 1 Reader • 448 pages
1996 • 1 Reader • 547 pages
1996 • 1 Reader • 583 pages
2000 • 2 Readers • 464 pages
2003 • 1 Reader • 475 pages